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A cyclic random motion at finite velocity with orthogonal directions is considered in the plane and in $\mathbb{R}^3$. We obtain in both cases the explicit conditional distributions of the position of the moving particle when the number of…

概率论 · 数学 2020-01-01 E. Orsingher , R. Garra , A. I. Zeifman

Many-body systems relaxing to equilibrium can exhibit complex dynamics even if their steady state is trivial. At low temperatures or high densities their evolution is often dominated by steric hindrances affecting particle motion [1,2,3].…

This paper proposes an integrated approach for the safe and efficient control of mobile robots in dynamic and uncertain environments. The approach consists of two key steps: one-shot multimodal motion prediction to anticipate motions of…

机器人学 · 计算机科学 2025-06-05 Ze Zhang , Georg Hess , Junjie Hu , Emmanuel Dean , Lennart Svensson , Knut Åkesson

Dynamics of systems of structured particles consisting of potentially interacting material points is considered in the framework of classical mechanics. Equations of interaction and motion of structured particles have been derived. The…

综合物理 · 物理学 2012-05-14 V. M. Somsikov

Traveling localized spots represent an important class of self-organized two-dimensional patterns in reaction-diffusion systems. We study open-loop control intended to guide a stable spot along a desired trajectory with desired velocity.…

斑图形成与孤子 · 物理学 2018-09-21 Steffen Martens , Christopher Ryll , Jakob Löber , Fredi Tröltzsch , Harald Engel

Focusing on the description of nontrivial properties of the energy transport at quantum scale, we investigate asymmetrical quantum spin chains described by boundary-driven $\mathit{XXZ}$ and $\mathit{XXX}$ Heisenberg models. We search for…

量子物理 · 物理学 2020-02-05 Deborah Oliveira , Emmanuel Pereira , Humberto C F Lemos

We consider model of a complex particle that consists of a rigid shell and a nucleus with spatial asymmetric interaction. The particle's dynamics with the nucleus driven by a periodic excitation is considered. It is shown that…

混沌动力学 · 物理学 2007-05-23 Sergey Denisov

We study long-range interacting systems perturbed by external stochastic forces. Unlike the case of short-range systems, where stochastic forces usually act locally on each particle, here we consider perturbations by external stochastic…

统计力学 · 物理学 2013-12-04 Cesare Nardini , Shamik Gupta , Stefano Ruffo , Thierry Dauxois , Freddy Bouchet

In physics, I noticed subjects not explained by formulas were often not studied, like how uncontrolled growth systems changed form. Weather, businesses, societies, environments, communities, cultures, groups, relationships, lives, and…

物理与社会 · 物理学 2023-05-18 Jessie Henshaw

Dynamic facilitation theory assumes short-ranged dynamic constraints to be the essential feature of supercooled liquids and draws much of its conclusions from the study of kinetically constrained models. While deceptively simple, these…

材料科学 · 物理学 2012-06-12 Thomas Speck , David Chandler

Ratchets are dynamic systems where particle transport is induced by zero-average forces due to the interplay between nonlinearity and asymmetry. Generally, they rely on the effect of a strong external driving. We show that stationary…

其他凝聚态物理 · 物理学 2009-10-16 I. Zapata , S. Albaladejo , J. M. R. Parrondo , J. J. Sáenz , F. Sols

In this paper, we propose a new control design scheme for solving the obstacle avoidance problem for nonlinear driftless control-affine systems. The class of systems under consideration satisfies controllability conditions with iterated Lie…

最优化与控制 · 数学 2019-02-08 Victoria Grushkovskaya , Alexander Zuyev

We consider the propagation of fronts in a periodically driven flowing medium. It is shown that the progress of fronts in these systems may be mediated by a turnstile mechanism akin to that found in chaotic advection. We first define the…

混沌动力学 · 物理学 2015-06-16 John R. Mahoney , Kevin A. Mitchell

Propulsion of otherwise passive objects is achieved by mechanisms of active driving. We concentrate on cases in which the direction of active drive is subject to spontaneous symmetry breaking. In our case, this direction will be maintained,…

生物物理 · 物理学 2022-07-08 Andreas M. Menzel

A hallmark of living systems is the ability to employ a common set of versatile building blocks that can self-organize into a multitude of different structures, in a way that can be controlled with minimal cost. This capability can only be…

统计力学 · 物理学 2022-01-26 Saeed Osat , Ramin Golestanian

Study on a rectified current induced by active particles has received a great attention due to its possible application to a microscopic motor in biological environments. Insertion of an {\em asymmetric} passive object amid many active…

软凝聚态物质 · 物理学 2021-11-19 Jae Sung Lee , Jong-Min Park , Jae Dong Noh , Hyunggyu Park

Particle currents flowing against an external driving are a fascinating phenomenon in both single-particle and interacting many-particle systems. Underlying physical mechanisms of such current reversals are not fully understood yet.…

统计力学 · 物理学 2026-03-10 Moritz Wolf , Sören Schweers , Philipp Maass

Kinetic traps are a notorious problem in equilibrium statistical mechanics, where temperature quenches ultimately fail to bring the system to low energy configurations. Using multifarious self-assembly as a model system, we introduce a…

统计力学 · 物理学 2024-07-15 Saeed Osat , Jakob Metson , Mehran Kardar , Ramin Golestanian

Dynamic properties of molecular motors whose motion is powered by interactions with specific lattice bonds are studied theoretically with the help of discrete-state stochastic "burnt-bridge" models. Molecular motors are depicted as random…

统计力学 · 物理学 2009-11-24 Maxim N. Artyomov , Alexander Yu. Morozov , Anatoly B. Kolomeisky

The mechanical force from light -- radiation pressure -- provides an intrinsic nonlinear interaction. Consequently, optomechanical systems near their steady state, such as the canonical optical spring, can display non-analytic behavior as a…

统计力学 · 物理学 2017-11-22 Stephen Ragole , Haitan Xu , John Lawall , Jacob M. Taylor